<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <!-- <script src="./index.js"></script> -->
    <title>Document</title>
</head>
<body>
    <button class="login-button">Login</button>
    <div class="panel">
        <div class="login-window">
            <div class="title-bar">
                <div class="title">标题</div>
                <div class="close-button">X</div>
            </div>
        </div>
    </div>
    <script src="./index.js"></script>
</body>
</html>